Modeling method and system based on drawing recognition, terminal and medium

The invention provides a modeling method and a system based on drawing recognition, a terminal and a medium. The method comprises the steps of recognizing a drawing to obtain pixels of a planar graph of the drawing; classifying the pixels to obtain a multi-class graph group corresponding to each plane graph; dividing the drawing to obtain each planar graph in the drawing; determining a positioning point position of each planar graph according to the axis graph group and the axis name graph group; determining the elevation of each plane graph, and determining the splicing insertion point of each plane graph in the three-dimensional model according to the plane graph name corresponding to each plane graph and the elevation of each plane graph; and according to the multi-class graph groups, the positions of the positioning points and the splicing insertion points, splicing a single-layer model generated by recognition of each plane graph so as to establish a whole-building three-dimensional model. The method pro